package com.ljt.utils;

import java.io.File;
import java.io.UnsupportedEncodingException;
import java.net.URL;

public class ClassUtils {
	/**
	 * 
	 * Description:取得当前类所在的文件
	 * 
	 * @param clazz
	 * @return
	 * @mail sunyujia@yahoo.cn
	 * @since：Sep 21, 2008 12:32:10 PM
	 */
	public static File getClassFile(Class clazz) {
		URL path = clazz.getResource(clazz.getName().substring(
				clazz.getName().lastIndexOf(".") + 1)
				+ ".class");
		if (path == null) {
			String name = clazz.getName().replaceAll("[.]", "/");
			path = clazz.getResource("/" + name + ".class");
		}
		System.out.println(path.getFile());
		return new File(path.getFile());
	}

	/**
	 * 
	 * Description:同getClassFile 解决中文编码问题
	 * 
	 * @param clazz
	 * @return
	 * @mail sunyujia@yahoo.cn
	 * @since：Sep 21, 2008 1:10:12 PM
	 */
	public static String getClassFilePath(Class clazz) {
		try {
			String f = getClassFile(clazz).getAbsolutePath();
			System.out.println("F:" + f);
			return java.net.URLDecoder.decode(f, "UTF-8");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
			return "";
		}
	}

	/**
	 * 
	 * Description:取得当前类所在的ClassPath目录
	 * 
	 * @param clazz
	 * @return
	 * @mail sunyujia@yahoo.cn
	 * @since：Sep 21, 2008 12:32:27 PM
	 */
	public static File getClassPathFile(Class clazz) {
		File file = getClassFile(clazz);
		for (int i = 0, count = clazz.getName().split("[.]").length; i < count; i++)
			file = file.getParentFile();
		if (file.getName().toUpperCase().endsWith(".JAR!")) {
			file = file.getParentFile();
		}
		return file;
	}

	/**
	 * 
	 * Description: 同getClassPathFile 解决中文编码问题
	 * 
	 * @param clazz
	 * @return
	 * @mail sunyujia@yahoo.cn
	 * @since：Sep 21, 2008 1:10:37 PM
	 */
	public static String getClassPath(Class clazz) {
		try {
			return java.net.URLDecoder.decode(getClassPathFile(clazz)
					.getAbsolutePath(), "UTF-8");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
			return "";
		}
	}

	public static String getClassPath() {
		return getClassPath(ClassUtils.class);
	}

	public static void main(String[] args) {
		System.out.println(ClassUtils.getClassFilePath(ClassUtils.class));
	}

}
